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Showing content with the highest reputation on 02/28/14 in Posts
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5 points
The Reaction Pictures Thread
LadyBernkastel and 4 others reacted to Doopliss2008 for a post in a topic
Corvette, this is for you. -
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4 pointsFucking Shogun 2
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TF2 general
The Irish Demopan and one other reacted to Razputin for a post in a topic
Now I know how a 50 year old feels when he hears 20 year olds talk about "when they were young" -
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The Official Random Image Thread!! SPUF style
Rammite and one other reacted to Cretler for a post in a topic
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The Official Random Image Thread!! SPUF style
Batty Batterson and one other reacted to Huff for a post in a topic
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1 pointYou are old. I would get up out of my chair to get to my computer and yell at you in Mumble, but I broke my hip trying.
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The Official Random Image Thread!! SPUF style
FrozenFirebug reacted to Spycicle for a post in a topic
Now I know why everyone here thinks the waifufags around here are batshit insane. Jesus fucking Christ how horrifying -
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1 pointI just won a game by default. Myself and the gym leader were on our last ones. I had a sableye, he had a weasel thing. Point is, it was immune to ghost, and mine was immune to normal. So I sat there and spammed until I was out of energy, then sat there as it whittled itself away with struggle. It was pretty funny.
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The Official Random Image Thread!! SPUF style
A 1970 Corvette reacted to Guy923 for a post in a topic
Sides ready for liftoff -
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Swiggity swee you didn't expect to see me
FrozenFirebug reacted to A 1970 Corvette for a post in a topic
3X POST COMBO -
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Meet the pyro
Idiot Cube reacted to Binary for a post in a topic
The pyrovisionWhich I just realized I also called. According to the law, you must rep me as well. -
1 point
Welcome, guests!
Idiot Cube reacted to TheKigYarGamer for a post in a topic
Now, students, we shall learn about the Doppler Effect: If a source of the light is moving away from an observer, then redshift (z > 0) occurs; if the source moves towards the observer, then blueshift (z < 0) occurs. This is true for all electromagnetic waves and is explained by the Doppler effect. Consequently, this type of redshift is called the Doppler redshift. If the source moves away from the observer with velocity v, which is much less than the speed of light (v \ll c), the redshift is given by (since ) where c is the speed of light. In the classical Doppler effect, the frequency of the source is not modified, but the recessional motion causes the illusion of a lower frequency. A more complete treatment of the Doppler redshift requires considering relativistic effects associated with motion of sources close to the speed of light. A complete derivation of the effect can be found in the article on the relativistic Doppler effect. In brief, objects moving close to the speed of light will experience deviations from the above formula due to the time dilation of special relativity which can be corrected for by introducing the Lorentz factor γ into the classical Doppler formula as follows: This phenomenon was first observed in a 1938 experiment performed by Herbert E. Ives and G.R. Stilwell, called the Ives-Stilwell experiment.[22] Since the Lorentz factor is dependent only on the magnitude of the velocity, this causes the redshift associated with the relativistic correction to be independent of the orientation of the source movement. In contrast, the classical part of the formula is dependent on the projection of the movement of the source into the line-of-sight which yields different results for different orientations. If θ is the angle between the direction of relative motion and the direction of emission in the observer's frame[23] (zero angle is directly away from the observer), the full form for the relativistic Doppler effect becomes: and for motion solely in the line of sight (θ = 0°), this equation reduces to: For the special case that the light is approaching at right angles (θ = 90°) to the direction of relative motion in the observer's frame,[24] the relativistic redshift is known as the transverse redshift, and a redshift: is measured, even though the object is not moving away from the observer. Even when the source is moving towards the observer, if there is a transverse component to the motion then there is some speed at which the dilation just cancels the expected blueshift and at higher speed the approaching source will be redshifted.